Lock installation kit

Abstract

A lock installation kit for use in installing, into a door, a dead bolt lock, a lock set with a latch, or other similar types of locks. The kit includes a hole cutter which can drill a hole entirely through a side face of the door, the hole being of a size sufficient to receive therethrough either a doorknob mechanism in the case of a lock set, or a lock cylinder in the case of a dead bolt lock. A template is also included which can be positioned over an edge of the door for locating the hole on the door side face at a predetermined distance from the door edge. In the case of a lock set with a latch, the template also locates the center of the end face of the door, and the kit then includes a wood drill for drilling a hole in the end face of the door of the size sufficient to receive therethrough the latch of the lock set. The hole cutter and template, and also the wood drill in the case of the lock set, together with appropriate instructions, are all combined with a single package.

What is claimed is: 
     
       1. A lock installation kit comprising: template means for positioning over an edge of a door for locating a center point of a door lock hole of a side face of the door at a predetermined distance from the door edge;   said template means including an elongated flat member having first and second sections foldable along a fold line therebetween to assume positions at right angles with each other thereby enabling positioning of said template over the edge of the door with said first section being disposed on the door side face and said second section being disposed on an end face of the door, said first section being longer than said second section, said first section having a single hole located at said predetermined distance when said fold line is disposed on the edge of the door;   hole cutting means for drilling the door lock hole entirely through the door side face, said door lock hole being of a size sufficient to receive therethrough a door lock;   said hole cutting means including a mandrel assembly having a shank portion capable of insertion into an electric drill, and a hole saw removably coupled to said shank portion;   said shank portion of said mandrel assembly being part of a pilot drill for inserting into said single hole in said first section of said flat member;   said mandrel assembly including a coupling arrangement secured to said shank portion of said pilot drill for supporting said hole saw and preventing rotation of said hole saw with respect to said pilot drill, and a locking member for securing said hole saw to said coupling arrangement; and   packaging means for containing together said hole cutting means and said template means to provide a unitary container.   
     
     
       2. A lock installation kit as in claim 1, wherein said coupling arrangement comprises a double-D boss having an enlarged circular base and a threaded neck portion, a socket screw securing said coupling arrangement to said shank portion of said pilot drill, said hole saw having a double-D opening to accommodate said double-D boss, and said locking member being a nut threaded onto said threaded neck portion. 
     
     
       3. A lock installation kit as in claim 2, and further comprising a washer positioned around said double-D boss and against said hole saw, said nut being threaded on said neck portion against said washer to sandwich and securely retain said hole saw between said washer and said enlarged circular base of said coupling arrangement. 
     
     
       4. A lock installation kit as in claim 1, and further comprising a wood drill for drilling a latch hole into the end face of the door, said latch hole being of a size sufficient to receive therethrough a latch of the door lock. 
     
     
       5. A lock installation kit as in claim 4, wherein said template means also locates a center of the end face of the door along a common horizontal plane with said center point of the door lock hole. 
     
     
       6. A lock installation kit as in claim 5, wherein said second section of said flat member has identifying means for locating the center of said door end face. 
     
     
       7. A lock installation kit as in claim 1, and further comprising an instruction sheet on how to use said hole cutting means and said template means for installing the door lock in the door. 
     
     
       8. A lock installation kit as in claim 6, wherein said identifying means of said second section includes an elongated slot with at least two identifying marks, each of said two marks respectively identifying the center of a end face of a different thickness.